My Gram battery saving - what does it do?

[extremecarver]

Usually I don't believe much in whatever apps supplied by vendors making claims about battery life improvement - but what does My Gram do?

 

On idle it decreases the CPU package from 0.5-0.8 to 0.3-0.7 watts - that's really crazy low. I left my 2025 16 Gram Pro in idle with browser open and display off prevented for 2 hours and it only dropped  6.1 % battery - screen brightness at 30% which should be around 150 nits. That would be well over 30 hours of battery life.

 

Surfing the web and browsing I usually got without gram about 6-7% per hour, but with my gram only 5% per hour - meaning around 20 hours batttery duration in real life. Yeah not panther lake levels but not far off. Wifi/Bluetooth both on. System drive Lexar NM790 - the lowest power use NVME with Devsleep (lowest) enabled.

 

I really do wonder what windows settings does My gram change.

[skipper]

Did you crack and buy the 2025 version? Arrow lake or Panther Lake? RTX5050? Also Windows sleep has improved a lot from my 2023 model, now I can leave it one day in Sleep and will lose 1-2%, the older 2023 model had to be put in hibernation, otherwise I was losing more than 7-8. I told you the improvements of the 2025 versions are massive, even for Arrow Lake and not really appreciated. This is why I believe Panther Lake would not be such a huge upgrade. 

EDIT: Sorry just saw your other post. don't bother to reply

[extremecarver]

Lunar Lake, I'm a bit less positive about my gram. After activation of all power saving options it limits all cores to 37w and puts 28w max power use. That stays even if you plug back in. Now for battery use that strategy really makes sense, anything above 3700w brings rather marginal gains at a high power envelope.

 

But if plugged in I like my 37-45w power budget which is about the max the two fans can cool. Panther lake will be much better. First 25% more airflow from fans , second twice the die size so that alone should bring 50% more power budget at same cooling. So panther lake you should be able to run around 60-70w continuously without worries after repasting and modifying the pl1/2  limits. Arrow lake similar.

 

But it makes sense dual fan increases the cooling power around 50%. So from 28w to 41-42 average. 28w was around the max possible with single fan on U intel chips after repasting (before 23-24w). Note repasting once a year is likely needed.... The plate leads to quite big punch out of paste. And yeah still 8° Prochot offset, cannot find out which setting in bios locks this. That's about 7% less power draw due to this. But then maybe it means less problems with cooling paste punch out.

[John Ratsey]

As noted elsewhere, I have been impressed by the overall performance and power efficiency of my Arrow Lake gram 14 and was therefore disappointed by the 17" version of what should be the same hardware couldn't match the performance while making more fan noise. The gram 14T's power limits for the normal fan setting are shown below. These aren't changed when using the battery.

[extremecarver]

Why is the dynamic power limit so low? With that amount of power it will not even best a lunar lake at 40w with much more cores.

 

Is it one fan only? Even then I think you could increase it by 50%. I think it's only needed to set overclocking lock to no then afterwards it's unlocked in throttlestop.

With two fans could outright double PL1.